Entry section for molten metal in continuous casting installations including a stationary refractory casting nozzle and an ingot-mould with ingot-mould walls which are movable in casting direction only

摘要

In order to be able to restore within a short time the stationary state of equilibrium in the event that disturbances occur in the form of plugs (10'''), the casting nozzle (1) is equipped with a curved portion (K) which ends at its outlet cross-section (1''') and has an outer contour curved convexly relative to its longitudinal axis (1''). This outer contour is so constituted that the gap (8) widens relative to the adjacent ingot-mould wall (3) in the casting direction (arrow 6) at a mean opening angle ( alpha ) of at least 7o, the length of the curved portion (K) being at most 50 mm. IMAGE